摘要
【目的】研究氮肥减量下缓释肥对乌龙茶鲜叶产量、品质的影响,为茶园减量施肥提供参考。【方法】采用武夷岩茶黄观音为试验材料,以不施氮肥(CK1)和常规施肥(CK2)为对照,设置缓释氮肥减量10%(T1)、20%(T2)、30%(T3)和40%(T4)等4个处理。【结果】与不施氮肥相比,缓释肥显著提高土壤有机质含量、pH值、茶叶产量、SPAD值、含氮量、氨基酸含量。T1、T2与CK2相比,茶叶产量无差异;有机质含量分别提高4.01%和3.10%;pH值分别提高5.82%和2.41%;氨基酸含量分别提高10.11%和9.04%;酚氨比分别降低10.11%和5.57%。对6个处理的成分指标进行主成分分析,提取前2个主成分,累积贡献率达95.20%。经主成分分析,各处理得分差异显著。T1处理t1得分4.418、t2得分1.092,T2处理t1得分2.038和t2得分0.731,两个处理得分较高。【结论】缓释肥氮肥减量10%、20%促进茶鲜叶品质提升,可在茶叶生产上推广应用。
【Objective】Effects of using a slow-release fertilizer to reduce nitrogen(N)demand on the yield and quality of oolong tea were studied for efficient fertilization at plantations.【Method】Wuyi rock tea,Huangguanyin,bushes were planted under various fertilization treatments including no N fertilizer(CK1),conventional application(CK2),and a slowrelease fertilizer with 10%(T1),20%(T2),30%(T3)or 40%(T4)N reduction.Yield of fresh leaves per plant and quality of the oolong tea made were determined.【Result】Compared with CK1,the use of the slow-release fertilizer increased the organic matters and pH in soil as well as the contents of N and amino acids in leaves,yield,and SPAD of the plants.The leaf yields under CK2,T1 and T2 did not differ significantly.But,in comparison to CK2,T1 resulted in 4.01%higher on soil organic matters,5.82%lower on pH,10.11%greater on amino acid content in tea leaves,and 10.11%lower on polyphenols/amino acid ratio;while T2 rendered 3.10%higher on soil organic matters,2.41%lower on pH,9.04%greater on amino acid content in tea leaves,and 5.57%lower on polyphenols/amino acid ratio.A principal component analysis on these criteria showed the top two principal components contributed 95.20%of the total.The scores on the components differed significantly with those for T1 to be 4.418 on the top first component and 1.092 on the second component;and those for T2,2.038 on the first component and 0.731 on the second component.【Conclusion】By using the slow-release fertilizer to replace 10%or 20%N,both yield and quality of oolong tea were improved.
作者
黄毅彪
胡泽波
林燕萍
张见明
王飞权
尹应武
金日良
陈荣冰
HUANG Yibiao;HU Zebo;LIN Yanping;ZHNAG Jianming;WANG Feiquan;YIN Yingwu;JIN Riliang;CHEN Rongbing(College of Tea and Food Science,Wuyi University,Wuyishan,Fujian 354300,China;College of Ecology and Resources Engineering,Wuyi University,Wuyishan,Fujian 354300,China;College of Chemistry and Chemical Engineering,Xiamen University,Xiamen,Fujian 361005,China;Wuyishan Zhengshan Shijia Tea Co.,Ltd.,Wuyishan,Fujian 354300,China)
出处
《福建农业学报》
CAS
CSCD
北大核心
2020年第5期525-531,共7页
Fujian Journal of Agricultural Sciences
基金
福建省科技计划对外合作项目(2019I0020)
中央引导地方科技发展专项(2019L3012)
福建省2011协同创新中心——中国乌龙茶产业协同创新中心专项(闽教科[2015]75号)
福建省科技厅科技创新平台项目(2018N2004)
南平市科技计划项目[N2017DN01、N2012Z06(3)]。
关键词
乌龙茶
缓释肥
产量
品质
主成分分析
Oolong tea
slow-release fertilizer
yield
quality
principal component analysis
